The sparsely distributed hot gas found today between galaxies, the intergalactic medium (IGM), is ionized. The early universe started off hot, but then it rapidly expanded and cooled allowing its main constituent, hydrogen, ...
Astronomy
Apr 27, 2020
2
186
Early Earth lacked an ozone layer to act as a shield against high-energy solar radiation, but microbes flourished by adapting to or finding other forms of protection from the higher ultraviolet radiation levels. Now researchers ...
Space Exploration
Mar 24, 2011
1
0
(PhysOrg.com) -- From the time he was 21 and working toward his Ph.D., Mike Behrenfeld has been observing phytoplankton -- floating ocean plants that have a global impact. Observing these tiny plants under a microscope, Behrenfeld ...
Earth Sciences
Jul 24, 2009
0
0
In this latest update from the MSL team, Ashwin Vasavada, the Deputy Project Scientist, explains how Curiosity has been monitoring the winds and radiation levels in Gale Crater. Curiosity has also been looking for dust devils—the ...
Space Exploration
Nov 19, 2012
8
0
In April and July 2014, the Sun emitted three jets of energetic particles into space, that were quite exceptional: the particle flows contained such high amounts of iron and helium-3, a rare variety of helium, as have been ...
Astronomy
Jan 11, 2018
0
32
(Phys.org) -- For the first time, scientists have identified how a plant's skin is assembled.
Biotechnology
May 22, 2012
0
0
Seagrasses provide the foundation of one of the most highly biodiverse, yet vulnerable, coastal marine ecosystems globally. They arose in three independent lineages from their freshwater ancestors some 100 million years ago ...
Evolution
Jan 26, 2024
0
96
(Phys.org)—A literal shot in the dark by imaging cameras on NASA's Cassini spacecraft has yielded an image of a visible glow from Titan, emanating not just from the top of Titan's atmosphere, but also - surprisingly - from ...
Space Exploration
Nov 1, 2012
9
0
(Phys.org)—This composite image shows a superbubble in the Large Magellanic Cloud (LMC), a small satellite galaxy of the Milky Way located about 160,000 light years from Earth.
Astronomy
Aug 30, 2012
4
0
Ultraviolet light from giant stellar flares can destroy a planet's habitability. New research from the University of North Carolina at Chapel Hill will help astrobiologists understand how much radiation planets experience ...
Astronomy
Oct 7, 2020
0
207
